220-1201 Printer Troubleshooting — Timed 20 Questions

Question 1

A user reports that their laser printer prints a 'PC LOAD LETTER' error message. The paper tray is full of A4 paper. What should the technician do to resolve the issue?

Accepted Answer

Change the paper size setting in the printer driver to A4.. The 'PC LOAD LETTER' error indicates the printer expects letter-size paper but the tray is loaded with A4. The solution is to either change the paper size setting in the printer driver or load letter-size paper, depending on the user's needs.

Answer

Replace the toner cartridge.

Answer

Clean the paper pickup rollers.

Answer

Update the printer firmware.

Question 2

A user complains that their laser printer is printing blank pages. The printer has toner, and the paper feeds correctly. Which component should the technician inspect first?

Accepted Answer

The toner cartridge.. Blank pages from a laser printer with toner usually indicate the toner cartridge's shutter is closed or the drum is not making contact. The toner cartridge is the most common cause and should be inspected first.

Answer

The fuser assembly.

Answer

The pickup rollers.

Answer

The network cable.

Question 3

A technician is troubleshooting a laser printer that produces pages with a faint ghost image of the previous page. The ghost image is slightly offset. Which component is most likely the cause?

Accepted Answer

The drum's cleaning blade is worn.. Ghosting in laser printers is often caused by a worn or damaged cleaning blade on the drum, or a failing fuser that doesn't fully fuse toner. The offset ghost indicates residual toner from the previous page not being cleaned off the drum.

Answer

The toner cartridge is low on toner.

Answer

The fuser assembly is overheating.

Answer

The pickup rollers are dirty.

Question 4

A small business uses a thermal printer for shipping labels. Recently, the labels are printing with missing sections and uneven darkness. What is the most likely cause?

Accepted Answer

The thermal printhead is dirty or has a dead element.. Thermal printers rely on a printhead that heats the paper. Uneven darkness and missing sections typically indicate a dirty or damaged printhead element. Cleaning the printhead with a thermal cleaning pen or isopropyl alcohol is the first step.

Answer

The label roll is loaded upside down.

Answer

The printer's platen roller is worn.

Answer

The label stock is expired.

Question 5

A technician is installing a new network-connected laser printer in a conference room. After connecting the Ethernet cable and power, the printer's control panel shows an IP address of 169.254.3.18. What is the most likely issue?

Accepted Answer

The printer's Ethernet cable is faulty or not connected properly.. An IP address starting with 169.254 indicates the printer failed to obtain an address from a DHCP server and assigned itself an Automatic Private IP Addressing (APIPA) address. The network connection or DHCP server should be checked.

Answer

The printer is configured with a static IP address.

Answer

The printer's toner cartridge is empty.

Answer

The printer's firmware needs to be updated.

Question 6

A small office has an inkjet printer that produces prints with horizontal white lines across the page. The lines appear in different positions on each print. Which step should the technician take first?

Accepted Answer

Run the printer's printhead cleaning cycle.. Horizontal white lines on inkjet output often indicate clogged printhead nozzles. Running the printer's cleaning cycle is the first recommended step to clear dried ink from the nozzles.

Answer

Replace the ink cartridges.

Answer

Update the printer driver.

Answer

Replace the printer's fuser.

Question 7

A user reports that their inkjet printer makes a loud grinding noise when printing, and the paper feeds crookedly. Which component is most likely failing?

Accepted Answer

The paper feed rollers.. Grinding noise and crooked paper feed indicate a problem with the paper pickup or feed rollers. These rollers may be worn, dirty, or misaligned, causing improper paper handling.

Answer

The printhead assembly.

Answer

The ink cartridges.

Answer

The printer's main logic board.

Question 8

A user reports that their laser printer is producing pages with vertical black streaks. The streaks appear in the same position on every page. Which component is most likely the cause?

Accepted Answer

Drum unit is scratched or damaged.. Vertical black streaks on laser printer output that repeat in the same position are typically caused by a scratched or damaged drum. The drum carries the toner image, and any defect transfers toner to the paper in a repeating pattern.

Answer

Toner cartridge is low on toner.

Answer

Fuser assembly is malfunctioning.

Answer

Pickup rollers are worn out.

Question 9

A technician is troubleshooting a color laser printer that prints documents with a yellow tint on all pages. The yellow toner cartridge is full, and the other colors are at normal levels. Which component is the most likely cause?

Accepted Answer

The yellow toner cartridge's shutter is stuck open.. A yellow tint across all pages suggests the yellow toner is being applied continuously. This could be due to a faulty yellow toner cartridge that leaks toner, or a stuck shutter. In some cases, the imaging drum for yellow may be damaged, but the cartridge itself is the first suspect.

Answer

The fuser assembly is overheating.

Answer

The printer's color calibration is incorrect.

Answer

The printer driver is set to grayscale.

Question 10

A technician is called to a site where a large format plotter is producing prints with banding (horizontal lines of varying density). The plotter uses dye-sublimation ink. The technician has already cleaned the printhead and run a nozzle check, but the issue persists. What should the technician check next?

Accepted Answer

Check the media advance rollers for wear or slippage.. Banding in dye-sublimation printers can be caused by inconsistent media advance, a failing printhead, or clogged ink lines. Since cleaning the printhead didn't help, the next step is to check the media advance mechanism, such as the rollers or encoder strip, which controls paper movement.

Answer

Replace the ink cartridges.

Answer

Update the printer driver.

Answer

Replace the fuser assembly.

Question 11

A user reports that their laser printer is producing pages with vertical black streaks. The streaks appear in the same location on every page, even after cleaning the glass and performing a calibration. Which component is most likely causing this issue?

Accepted Answer

Toner cartridge drum. Vertical black streaks on laser printer output that repeat in the same location typically indicate a damaged drum or a scratched organic photoconductor (OPC) drum. The drum is responsible for transferring toner to the paper, and any defect on its surface will reproduce the streak on every page.

Answer

Fuser assembly

Answer

Pickup rollers

Answer

Transfer roller

Question 12

A user reports that their laser printer prints pages with a repeating horizontal band of missing text about every 3 inches. The printer has a new toner cartridge and the drum is separate. What is the most likely cause?

Accepted Answer

The drum unit has a scratch or defect. Repeating horizontal defects at regular intervals are classic symptoms of a damaged roller or drum. The distance between defects matches the circumference of the drum or a roller. Since the toner cartridge is new, the issue likely lies with the separate drum unit or a roller (like the transfer roller) that has a defect.

Answer

The fuser is not reaching the correct temperature

Answer

The toner cartridge is defective

Answer

The paper is damp or of poor quality

Question 13

A user complains that their inkjet printer produces smudged output that rubs off when touched. The printer uses standard plain paper and the ink cartridges are original. What is the most likely cause?

Accepted Answer

The paper type setting is incorrect for the media. Smudged ink that rubs off on an inkjet printer usually means the ink is not drying properly. This can happen if the paper type setting is incorrect (e.g., set to 'plain paper' when using glossy paper) or if the printer is set to a high-speed mode that doesn't allow enough drying time. Adjusting the paper type or print quality setting often resolves the issue.

Answer

The printhead is misaligned

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The ink cartridges are counterfeit

Answer

The fuser is malfunctioning

Question 14

A user in a law office reports that their laser printer prints documents with faint text and light images. The toner cartridge is new, and the printer has sufficient toner. Which component should you inspect or replace first?

Accepted Answer

Drum unit. Faint print with a new toner cartridge often points to a worn or damaged drum. The drum is part of the toner cartridge or a separate unit, and if it is worn, it cannot hold a proper charge, resulting in light output. Replacing the drum or the entire cartridge usually solves the problem.

Answer

Transfer roller

Answer

Fuser assembly

Answer

Pickup rollers

Question 15

A network printer in a school is shared by multiple users. They report that print jobs are frequently stuck in the queue and never print, but the printer itself is powered on and shows no errors. What is the most likely cause?

Accepted Answer

The printer has a faulty network cable or incorrect IP configuration. Print jobs stuck in the queue often indicate a communication issue between the printer and the network. A bad network cable or incorrect IP configuration can cause the printer to appear online but not receive data. Checking the network connection and printer IP settings is the first step.

Answer

The printer driver is outdated

Answer

The print spooler service is stopped on the print server

Answer

The printer's fuser is worn out

Question 16

A user reports that their inkjet printer produces output with horizontal white lines through text and images. The printer has been used heavily for months without maintenance. What should you do to resolve this issue?

Accepted Answer

Run the printer's printhead cleaning cycle. Horizontal white lines on inkjet output indicate clogged printhead nozzles. Over time, dried ink can block nozzles, preventing ink from being deposited. Running a printhead cleaning cycle uses the printer's built-in routine to clear clogs. If that fails, a manual cleaning or replacement may be needed.

Answer

Replace the fuser assembly

Answer

Perform a printhead alignment

Answer

Replace the pickup rollers

Question 17

During a routine printer maintenance, you replace the toner cartridge in a laser printer. After reassembly, the printer displays 'Replace Toner' error even though the new cartridge is installed. What should you do first?

Accepted Answer

Remove the protective seal and reseat the cartridge. The 'Replace Toner' error after installing a new cartridge often means the cartridge is not properly seated or the protective seal was not removed. Removing the seal allows toner to flow, and reseating ensures the printer detects the cartridge correctly.

Answer

Replace the fuser assembly

Answer

Clean the corona wire

Answer

Update the printer firmware

Question 18

A technician is installing a new thermal printer for a retail point-of-sale system. After connecting the printer and installing the driver, the printer prints garbled characters and random symbols. What is the most likely cause?

Accepted Answer

The printer driver is incorrect for the model. Garbled characters or random symbols often indicate a driver mismatch or incorrect printer language setting. Thermal printers typically use ESC/POS or similar commands. Installing the wrong driver or having the communication settings (baud rate, parity) misconfigured can cause the printer to misinterpret data.

Answer

The thermal paper is loaded upside down

Answer

The printhead is dirty

Answer

The printer is out of paper

Question 19

A small office has an inkjet printer that intermittently prints blank pages. The printer has been recently refilled with ink, and the printhead alignment test prints correctly. What is the most likely cause of the blank pages?

Accepted Answer

Clogged printhead nozzles. Inkjet printers that print blank pages often have clogged printhead nozzles, especially after refilling. Even if the alignment test prints fine, the nozzles may be partially blocked, causing some pages to print blank. Running a printhead cleaning cycle usually resolves this.

Answer

Low ink levels in the cartridge

Answer

Faulty fuser assembly

Answer

Incorrect paper type setting

Question 20

A large organization uses multiple network printers. One printer consistently prints pages with a faint ghost image of the previous page's content. The printer has been recently serviced with a new toner cartridge and drum. What component is most likely causing this ghosting?

Accepted Answer

The fuser assembly is failing. Ghosting—a faint duplicate of a previous image—is often caused by a failing fuser that does not properly clean residual toner from the drum or by a worn cleaning blade. Even with new consumables, the fuser or cleaning assembly may be worn. The fuser's heat and pressure can cause toner to stick and transfer later.

Answer

The transfer roller is worn

Answer

The toner cartridge is low on toner

Answer

The paper path has a buildup of toner